Internal-combustion engine.



I Application filed September 11,1916, Serial No. 1119,3532. Renewed 'l'iily i reruns Grimace, rumors, assienon rumors.

nrnnnan-coienusrioir rais ns.

To allrwiwm i6 mag concern:

Be it known that l, JAMES SHAW, a citizen of the'Unitcd States of America, and'a resident of Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Internal-Combustion .Engines, of which the following is a specification.

This invention relates to' that class of internal combustion engines, in which the inlet-outlet opening oil the combustion chamber is'controlled by a rotary valve of the cylindric shell type, an example of which use, is

constitutes the subject matter of my prior Igetters Patent No. 13 88398, dated June-27, 1 16. i

And the present improvement has for its object, to provide a simple and eflicienli structural formation of a rotary valve member, by means of which the usual buckling or Warping of the transverse Walls of the exhaust passage-of .the valve member, due to the repeated and rapid flashes of flame to which said'walls are exposed in actual prevented in a simple and eilicient manner, all as Will hereinafter more fully appear.

In the accompanying drawing:

Figure l, is a transverse section of a rotary valve and associated end portion of an internal combustion engine, illustrating the preferred form of the present invention.

Figs. 2 andfi, are detail transverse sections of the valve member illustrating modiby the rotary valve member now to be described.

5 designates rotary valve member arranged. in the longitudinal bore of the valve housing 2 and having a turning fit therein.

The valye member 5 is of a cylindrical shell type similar to that descmhed in detail in Specification of :Lettcrs Lateut.

The housing 2 is provided with rro ii. s. stores on, or emcaeo,

latented Apr. 1918.

21, ion"; Serial No. 182,092.

my aforesaid Letters Patent, No. 1,186,496,

and has its transverse exhaust passage 6, extending diametrically of the cylindrical shell portion of the valve member 5 and with its respective ends opening through the periphery of said valve member 5 and adapted to re 'ster the inlet-outlet opening 3, with she-out ct passage 4 to permit the exhaust of the engine cylinder to escape in the practical operation of the engine.

The material feature of the present improvement comprises in a rotary valve memher as above described, a structural formation of parts, as followsz- 7 designates transverse channels or grooves, preferably two in number, formed near the respective ends of the inclosing Walls of the transverse exhaust passage 6, aforesaid. With such structural formation, free expansion and contraction of the said Walls of the passage 6, under the influence of the fiashesof flametc which the same are exposed in actual use, can take place and the usual buckling or Warping of said Walls thereby prevented.

The triangular or V form of the transverse channels 7 and 7', shown in Figs. 1 and 2, are the preferred type of construction, in that the alternate expansion and contraction of the Walls of-the passage 6 aforesaid, with such form of channel, is adapted to loosen and set free any extensive amount or" hard carbon, which may accumulate in said channels 7, to interfere with the functions of the same. The scope of my 111V8I1t10n,l10WGVGI', embraces the rectangular type 7" of said channels as shown. in Fig. 3.

Having thus fully described my said invention, What I claim as new and desire to secure by Letters Patent, is:

1. A rotaryvalve for internal. combustion engines, comprising acircular shell formed with a diamctric exhaustpassage, the Wall of which s rormed with a transverse chan- "nel, substantially as set forth.

2; A rotary valve for internal combustion engines, comprising a circular shell formed. with a diametric exhaust passage, the Wall of which is formed with transverse channels, disposed adjacent to the respectiveends thereof, substantially as set, forth.

' 3. A rotary valve for internal combustion enginea comprising a circular shell formed ,with a. diametric exhaust passage, the wally of which is iormeo. with a transverse channel having a triangular form in cross soction, substantially as set forth.

4:. A rotary valve for internal combustion engines, comprising a circular shell formed 5 with a diametrio exhaust passage", the wall of which is formed with transverse channels disposed adjacent to the respective ends thereof, said channels having a triangular form in cross-section, substantially as set 10 JAMES SHAW. 

